Starling-machine



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No. 406,891. Patented July 16, 1889.

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B. P. DONNELL. STAPLING MACHINE.

No. 406,891. Patented July 16, 1889 whmogm er. Wnhinglml. a c

UNITED STAT S PATENT OFFICE.

EDlVARD P. DONNELL, OF CHICAGO, ILLINOIS.

STAPLlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 406,891, dated July 16, 1889.

Application filed December 15, 1888. Serial No. 293,733. (No model.)

To all whom it may con-corn;

Be it known that I, EDWARD P. DONNELL, residing at Chicago, in the county of Cook and State of Illinois, and a citizen of the United States, have invented a new and useful Improvement in stapling-Machines, of which the following is a specification, reference being had to the accompanying drawings, in which Figure 1 is a front elevation with the faceplate removed Fig. 2 is a side elevation, partly in section, showing the staple driver and former in their upper positions. Fig. is a similar elevation of the upper end, partly in section, showing the staple-former nearly in its lowest position. Figs. 4:, 5, 3, and 7 show parts hereinafter explained.

The object of this invention is to provide a book-stapling machine for stapling books, pamphlets, and other loose sheets of paper together by wire, which is adapted to be operated by foot or hand power, and to simplify the construction and operation of machines of this class. Its nature consists in the several combinations of parts and improvements hereinafter described and claimed as new.

In the drawings, A indicates a cylindrical standard, which is to be provided with a suitable base (not shown) for attaching it to the floor or for supporting itwithout attachment, as may be desired.

A is a plate fitted to the standard to give a flat surface for the attachment of the brackets or arms. This plate may be cast. with the standard or bolted thereto, and it may be omitted if the top of the standard is flattened on one side or is made in an angular form.

13 B are brackets or side arms for supporting the working parts.

O indicates the head of the bracket ll.

D is the working-table.

D is the downwardly-i1lclined extension of the table.

E is a grooved head attached to or made a part of the bracket 13.

E is a face-plate.

F is a gage attached to the part I) to regulate the distance between the back of the book or pamphlet and the inserted staples, and for this purpose it is provided with slots and set-screws, as shown, so that this distance may be varied as desired.

G is a pitman or operating-bar, which extends down to the base of the machine, and is there connected with the foot lever or treadle for operating it in one direct-ion, and a suitable spring is to be applied either to this rod or to the treadle to give it a positive return movement. As this base part with its treadle and spring may be of any well-known form, it is not shown.

ll is a driving-lever pivoted to the bracket 13, as shown, and its long arm is pivoted with the rod or bar G. Its short arm is provided with forks or projections 61. l), the workingfaces of which may be lined so as to renew their working-faces when worn, as shown at Fig. 2.

1 indicates a wire spool or spool-holder supported upon a suitable arm.

.I is a tension-spring or tension device.

K is a wire (shown in position in Fig. l) for severing and forming a staple. The head E is grooved out to receive the staple-former c, which staple-former is provided with a knife 13, as shown in Fig. 1, for severing the wire, which is held in an adjustable tubej, through which the wire passes and which can be adjusted to work in exact conformity to the position of the knife, so as to properly sever the wire.

The face-plate E is milled or otherwise hollowed out on its under surface, as shown in Figs. 2 and 3, to form a cavity for the working of the feed-arm "r, and when attached to the head E it forms a complete support for the staple former and driver, as shown in Fig. 7.

The staple-former c is also provided with a vertical groove in its outer face, with small side grooves for guiding the driver, as shown in Fig. U. It is also provided with a pin 0' to limit its downward movement, and with a notch h to engage with the arm or fork b of the lever II. \Vithin the groove and nearits lower end it is provided with aledge or pin f for lifting on its return movements the driver (I. This former, in addition to being pro vided at its lower end with the severing-knife i, is also forked, so as to pass sufficiently far down at the sides of the anvil to form the severed portion of the wire into a proper staple, atwhich point its movement is stopped by the limit-pin c and at the same time the arm or fork b of the lever II passes out of the notch b, so that its descent can be continued.

without disturbing the former 0. Within the face-groove of the former the driver (Z is placed, and it is so formed as to fit therein and in the smaller side grooves shown in Fig. 6. V

The driver is provided with a ledge or stop 2, which acts in conjunction with the pin or ledge f of the former when being returned to position. The head E also contains the anvil g, which anvil is inclined on the upper side of its head, as shown in Fig. 2, so that the driver will move it, out of the way, and its head is also provided with a slot g for the entry of the wire and discharge of the staple. The anvil is supported in a tube h, which eontains a ret111rn-spring h to return it to position when the driver passes above it.

At the side of the head E a downwardly-projecting arm 0 is attached. The outer end of this arm is provided with a pivoted dog or pawl 13, which is serrated at its lower end and acts against a rest or ledge q, to lock the wire against any backward movement. This dog is set in ari inclined position, so that the wire may be drawn through it easily and so that it will strongly hold against any attempt to return the wire or move it backward. It is made adjustable and is provided with a light spring to insure its maintenance in position, as shown at Fig. l.

To the arm or bracket 0 is pivoted a bent lever composed of the arms a" s, which may be made in one or in two parts fastened to gether, as may be found mostconvenient. It is provided with a spring .9, which holds the arm 1" against the pin 0*, and causes the arm 3 to move outward when the staple-former c descends, and the pin 7' being attached to said staple-former moves downward under the action of the spring 8. A circular disk (shown enlarged at Fig. 5) moves backward on the wire a sufficient distance to advance the wire a length sufficient to form one staple upon its return movement, which return movement is made positive by the action of the pin 0" against the arm 0 of the lever. A screw-threaded stop 0 is screwed into the arm 8. This stop 0 strikes the arm 0,1imiting the outward movement of the arm s. %y adjusting this screw-threaded stop 0 the length of the leg oft-he staple on the opposite side of the anvil 9 can be varied. By varying the distance of the knife 2' and tube j from the anvil g the length of the leg of the staple on that side of the anvil can be varied.

As shown at Fig. 5, it will be seen that the locking-disk o is attached to an arm 15, which is pivoted to the lever-arm s by the pivot a. This pivoted arm t is provided with a spring w, so as to give the locking-disk a separate movement and to insure its remaining in contact with the plate or ledge g. It also stands at an incline which insures a locking of the wire when it is to be fed forward. This disk is provided with a milled or serrated edge, and in order to avoid the necessity of replacing it when worn in one position I provideit with a series of holes which act in connection with the pin or screw 00, so that when shifted from one hole to another a new wearing-surface is presented. 3y this arrangement I am enabled to use the entire periphery of the disk, which avoids the necessity for-frequent renewal. This is an important advantage, as it is essential that there be no slipping in the feed movement, for with even a slight slip the legs of the staple will be of unequal length, and therefore more difficult to drive. The lower or cylindrical headOis provided with a shaft or rod 0, which supports the feed-table and is adjustable up and down by means of the hand-wheel and screw 0 and it is kept firmly in position by the inclosed spring 0 Immediately beneath the stapledriver the shaft 0' is provided with an anvilblock on, which properly receives and clinches the legs of the staple when driven. It is provided with an inclined arm 70, which, acting in connection with the bail or swinging arm Z, permits the table D'to be turned upward and held in a horizontal position, or to be unlocked and dropped into a position corresponding to that of the part D, so as to form a proper table for stitching through the back of folded leaves, as is desirable for small pamphlets or thin books. WVhen used in this form, as shown at Fig. 4, I apply to the right-hand side of the head E a double inclined or inverted-trough-shaped feed-guide and holding-plate g, which holds the loose leaves down upon the table so that they will not move out of position and so as to insure the exact driving of the staples in the line of the fold. This guide is provided with a slot 2' and a set or thumb screw, so that it can be adjusted to fit the size of a pamphlet or number of sheets fed in. By the application of this feed-guide and holder much more perfect work can be had than has heretofore been attainable for this class of stapling and it can be used by unskilled laborers. It will be understood that when this guide y is used the guide F is to be removed.

In'operation the foot lever or treadle is so arranged that the pressure upon it elevates the shaft G, as shown in Fig. 3, and under this elevating movement the forked end of the lever I'I descends, and the first operation is to force the staple-former 0 down nearly or quite to its lowest position, and as this movement withdraws the arm Z) the arm a comes in contact with the driver and continues moving the driver down until it drives the staple home, the position shown in Fig. 3 being at the point where the arm 1) passes out of operation and the arm a commences its action. The further operation of the machine will be readily understood from the description, as

the formation and driving of the staple are well understood, and it will of course be understood that as the spring which returns the rodG retracts the lever II with it the arm I) will again pass into or under the ledge b and lift the staple-former until the pin or ledge f comes in contact with the pin or shoulder e, from which point it lifts the former and driver together, as shown in Fig. 2.

hat I claim as new, and desire to secure by Letters Patent, is

1. The combination, with the staple-former c and the driver (7', of the lever ll, having an arm 1), adapted to become engaged with and disengaged from said former, and an arm (1, adapted to come in contact with the upper portion of the driver, substantially as described.

2. The combination of the longitudinallygrooved former 0, having in its grooved face a projection f, the driver (I, engaged in said grooved face of the former and having a shoulder e, and a lever having an arm to engage said former and an arm to come in contact with the upper end of the driver, substantially as described.

3. The combination of the bent leverr .9, having the spring 3, a locking-disk -r, with the pin r, and former c, substantially as and for the purpose specified.

4. The combination of the bent lever r 3, having the slots q, with the pivoted lever 1, spring TU, and rotatable disk r, substantially as described.

5. The combination of the pivoted lever r 8, pin r, former a, with the lever H, having the projecting arms or forks a b, substantially as described.

6. The combination, with the hinged table D D, of the inverted-trongh-shaped feedguide and holding-plate 1 supported above said table, and means for giving a vertical adjustment to said guide and holder, substantially as described.

'7. The combination, with the driver (Z, the staple-former 0, having a pin r, and the arm 0, of the lever-arms r s, and adjustable stop 0, substantially as described.

8. The combination and arrangement of the rod G, lever lI, having the forks or arms a l), with the driver (I, the former 0, having the pin r, the pivoted lever r 8, operating to feed wire, form, and drive staples by a single movement of the lever, substantially as set forth.

EDVARD P. DONNELL.

Vitnesses:

WM. F. GRAY, E. GRUNICH. 

